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Summary

If you own a company and have to keep track of a database with lots of information, or at least information that needs to stay secure, then SQL is the right option for you. This is a simple coding language that anyone can use and will often just require a few lines to get the work done. But with those few lines, you can write out a strong code that will help you to get, sort through, and create a database that works for you.  

This guidebook will take a look at all the different topics that you will need to learn to make SQL work for you. Some of the topics that we will discuss in this guidebook about the SQL language include:  

  • What is SQL
  • Why is it better than other database management languages
  • How to use SQL
  • How to work with the SQL commands
  • How to create your own tables
  • How to work with searches on SQL
  • How to work with your data types  

And so much more. When you are ready to get started with SQL and getting it to work for your needs, make sure to check out this guidebook to help you out.  

©2018 Zach Webber (P)2018 Zapata publishing

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Interested in working with a database?

As we have gone through this guidebook, we have spent a lot of time talking about search results and how SQL can help out with this. You can use SQL to make it easier for you and for your users to search for terms or items and have the right things show up. This is a great way to sort through all the information that is inside of the database, so you can organize it the right way and ensure that you are getting the right things. Once you have set up your own database for your business, and you have taken the time to learn how to create some of your own tables, it is now time to learn how to do various search queries on this system. You can make the SQL language work for you to ensure that you can find any result that you would like as long as that information is found in the database. You do need to make sure that you have set up the database in the proper way so that your search will find the right information without encountering any kind of issue. A good way to think about it is that there are times when people will come to visit your website, and they are there because they are looking for some particular product that you are trying to sell.

Are you more interested in working with a database that is slow and brings back the wrong results for your user? No, this will make the user mad, and they will go and use a different store for their needs. It is much better to go with a database that is set up right so that it is fast and will return the results that are needed. Let’s take a look at how you would be able to set up your queries the right way so that the database will return the best results for you.

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Boolean values

You are also able to work with what are known as Boolean values. These Boolean values are important because they will perform a lot of different functions inside the SQL system, and that can make it easier to work on some of the searches that you want to do. When you work with Boolean values, there will be three options of what will come up. These three options are true, false, and null. As you are working with the Boolean values, you will also find that using these values can be helpful when you want to compare several units of data inside of your table. You would be able to use those units and figure out if they are matching or not and then will receive the right answer based on the Boolean values. For example, you would be able to use this in SQL to specify the parameters of a search, and all of the conditions that come back to you will either be true, false, or null based on the things that you are trying to compare. With these kinds of values, you should note that it will give you the results only when the answer will be true. If the answer to these values ends up being null or false, the data will not be retrieved out of the database for you or for the user.

However, if you end up with a value that is true, you can notice that all the information is true and it will show up for you. A good way to look at this is when your user is in the database and would like to do a search to find something there. If the keywords of the product match what the user is typing into the search bar, then true answers will show up while everything else will stay away. If you have your own website and you sell things online, you will find that you will spend a lot of time working with these Boolean values. These values will ensure that you can get the right results to show up in your program.

So, if the user goes through and types in a keyword that they would like to be able to find inside of the code, the Boolean value would be able to look at that and find the results that would fit in.

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This is kind of how the SQL database works as well

If you decide that SQL is the language that you will work on for managing your database, you can take a look at the database. You will notice that when you look at this, you are basically just looking at groups of information. Some people will consider these to be organizational mechanisms that will be used to store information that you, as the user, can look at later on, and it can do this as effectively as possible. There are a ton of things that SQL can help you with when it comes to managing your database, and you will see some great results. There are times when you are working on a project with your company, and you may be working with some kind of database that is very similar to SQL, and you may not even realize that you are doing this. For example, one database that you commonly use is the phone book. This will contain a ton of information about people in your area including their name, what business they are in, their address, and their phone numbers. And all this information is found in one place so you won't have to search all over to find it. This is kind of how the SQL database works as well. It will do this by looking through the information that you have available through your company database. It will sort through that information so that you are better able to find what you need the most without making a mess or wasting time.

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The results that are needed

In the past, if you were working with a computer for your business, you were most likely using a mainframe computer. What this means is that the machines were able to hold onto a large system, and this system would be good at storing all the information that you need and for processing options. The user would be able to get onto these computers and interact with the mainframe, which in this case would be a ‘dumb’ terminal or one that is not able to interact all on its own. If a user wanted to be able to get the information to show up the correct function, the dumb terminal would need to rely on all the information that is inside the computer, such as the memory, processor, and storage. Now, these systems were able to work, and they got the job done for a very long time. If your company uses these and this is what you are most comfortable with using, it does get the work done. But there are some options on the market that will do a better job. These options can be found in the client-server system. These systems will use some different processes to help you to get the results that are needed. With this one, the main computer that you are using, which would be called the ‘server,’ will be accessible to any user who is on the network. Now, these users must have the right credentials to do this, which helps to keep the system safe and secure. But if the user has the right information and is on your network, they can reach the information without a lot of trouble and barely any effort. The user can get the server from other servers or from their desktop computer, and the user will then be known as the ‘client’ so that the client and server are easily able to interact through this database.

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Learn the must know basics

Excellent course. You learn to install Your own php/mysql/apache server. You learn the must know basics of relational database design and using sql queries. You really get to know phpMyAdmin.

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Learn more about the SQL language

This will discuss everything that you need to know to get started with the SQL language. If you run your own business, you know how important having a good database in place can be for the good of your company and for the products that you are trying to sell. And when it comes to databases, you will find that none will work better than the SQL language. This guidebook will take some time to explore the SQL language and how you can use it to take your database to the next level. In this guidebook, we will take a look at some of the basics of databases and the SQL language. We will then move on to some of the different things that you can add to this database including the commands to make it work, how to work with data types, and even how to do a search or create some new tables.
When you are ready to learn more about the SQL language and how it will work for all your needs with a database, make sure to check out this guidebook so you can learn how to get started today.

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Absolutely Phenomenal!!

This is truly a Great Course !!! , The art and the beauty on relational databases work is really amazing ,

I really enjoyed learning this course starting from creating a simple table to creating multiple tables and establishing relationships in each of them .

All thanks to Mr. Zach Webber , He was absolutely Phenomenal!!! , the way he taught this course was very interactive , He taught us performing even a simple real world problem through SQL.

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So much to learn but hard to catch

Great course, So much to learn but hard to catch(It was totally new to me). I mean, really, a few days ago, I didn't even knew what SQL was and now I am getting it.\n\nThank you very much.......

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Work differently

With the Boolean values, this will happen. If the user inputs ‘dress’ on the system, the Boolean value will go through each item and check to see whether they are true to this statement. If the item has the word ‘dress’ in it, then these will show up on your screen. If the item does not have that keyword with it, the Boolean value will see this as a false statement and will not list it up on the screen. As long as the Boolean value is working the way that it should, your user can get the items that they want, and only these items will show up on the screen. This can be incredibly useful for anyone who is selling things online, especially if they have a large inventory to choose from and need the program, such as SQL, to sort through a ton of data to figure it out. The Boolean values will do all the work for you to help prevent issues. As you can see through this chapter 3, there are many data types that you can work with inside of SQL to make your searches and your program easier and simpler. Each data type will work differently so that you will be provided the right results and get more than what you need.

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Gives you a basic understanding on SQL

This gives you a basic understanding on SQL for beginners. William Bahl explained so well in such a way that even a candidate with zero knowledge can understand the concepts and can complete the course.

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  • Tania
  • 06-02-21

Will be used to reach your database

There are a lot of business owners who will find that the client and server technology is the one that works for them. This system is great for many companies, but there are some things that you will need to add or take away at times because of how technology has been changing lately. There are some companies that like the idea that their database will do better with the internet so that they can work on this database anywhere they are located, whether they are at home or at the office. There are even times when a customer will have an account with the company, and they will need to be able to access the database online as well. For example, if you have an account with Amazon, you are a part of their database, and you can gain access to certain parts through this. As the trend continues for companies to move online, it is more common to see that databases are moving online as well and that you must have a website and a good web browser so that the customer can come in and check them out. You can always add in usernames and passwords to make it more secure and to ensure that only the right user can gain access to their information. This is a great idea to help protect personal and payment information of your customers. Most companies will require that their users pick out security credentials to get on the account, but they will offer the account for free. Of course, this is a system that is pretty easy to work with, but there will be a number of things going on behind the scenes to make sure that the program will work properly. The customer can simply go onto the system and check the information with ease, but there will be a lot of work for the server to do to make sure that the information is showing up on the screen in the right way, and to ensure that the user will have a good experience and actually see their own account information on the screen. For example, you may be able to see that the web browser that you are using uses SQL or a program that is similar to it, to figure out the user that your data is hoping to see.

The SQL system will be used to reach your database, as soon as the customer can put in what they are looking for. The SQL system will see this query, and then bring back information on the website that will show up on the web browser, and if the system is working properly, the right information will show up on the page.

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  • Ethel
  • 15-02-21

Made to be easy

For those who have not spent that much time at all learning a programming language and who would not consider themselves programmers, the commands that you would use in SQL are not too hard to learn. Commands in SQL are all designed with a syntax that fits in with the English language. They will begin with a command statement that is in charge of describing the action that the program should take. They will then be followed by a clause that will describe the target of the command. This can include a specific table within a database affected by the command. And then it will all end with a series of clauses that are responsible for providing some more information.

At first, this will seem really complicated, and you may be worried about how much work it will be to get it set up. But when you start to work on a few codes, you will find that it is not actually that hard to work with. SQL may sound like it is a complicated language for you to learn, but it is actually really easy to figure out. We will spend some time looking at all the different things that you can do when you decide to use the SQL language to help you control the database that you use in your company.

It is made to be easy and to make things easier when you are working with the database, or when you are trying to make it easy on your user to find information and SQL certainly delivers on this.

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  • Albert
  • 20-02-21

Done in a simple manner

The SQL system is capable of helping you get this done in a simple manner so that your customers will find the things that they want without having to worry or fight with the website. There are many different applications where you can use some of the Boolean expressions in SQL, but as a beginner, this is probably the method that you will use the most often. You are also able to use it when you want to look through your database and find specific answers to questions, or when you are looking through the store or program and want to find specific information. When you add some of this information into tables into SQL, you can speed this process up more than ever before. It is important to remember how these Boolean results will work. They are in charge of deciding whether something matches up with what you are searching for. If something does match up with the keywords that you place into the system, then they will show up. But if other objects or items do not match up with this, then they will be shown as false or null and will not show up. Let’s say that you are using a website to sell some of your products, for example, clothing. Someone comes onto your site and wants to look for dresses they can use for special occasions. If they type in the word ‘dress’ on the search bar, you want to make sure that they can see the products that they want, rather than something else. This means that dresses should show up on the screen after the search is done rather than shoes or accessories.

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  • Stephanie
  • 24-02-21

What you are looking for

There are a lot of different options that you can choose from, and it really depends on what you are looking for and what you want to do with them. Some of these languages are good for helping you to create a good website. Some are better for beginners while others are good for those who are more advanced. Some are good for creating a smartphone application or for working on your own game to share with others. And then you can also choose a coding language that is like SQL, which are meant to help businesses stay organized and keep track of their information without all the challenges that can come with this. Traditionally, many companies would choose to work with the ‘Database Management System,’ or the DBMS to help them to keep organized and to keep track of their customers and their products. This was the first option that was on the market for this kind of organization, and it does work well. But over the years there have been some newer methods that have changed the way that companies can sort and hold their information.

Even when it comes to the most basic management system for data that you can choose, you will see that there is a ton more power and security than you would have found in the past.

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  • Catherine
  • 24-02-21

You can do many of the important tasks

Once you are done with this guidebook, you can do many of the important tasks that you need to do to make SQL work for you. It is so important to have a good database in place if you want to properly serve your customers and keep your information in order and the SQL language will make sure that you are actually able to do this.

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  • Shantel Phillips
  • 24-02-21

I get many knowledge about SQL

Hello ! I am Physics major student in Myanmar.In my university there is no Programming course.I get this course during COVIDE-19 period and I get many knowledge about SQL Programming language.Thanks.

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  • Patricia
  • 23-02-21

In chapter: 4

This guidebook has taken a lot of time to look over many different topics when it comes to SQL, such as which data types you should use to work with your database in SQL. We even spent some time looking at the various commands that you would be able to choose when you are in SQL so you can initiate queries and search around inside the database. Now that you have some of these basics down, it is time to move on to learn about the steps that you should take when you want to manage the objectivity that comes in the database. There are many things that we would be able to touch upon with regards to this in the guidebook, but some of the ones that we will spend our time on include tables, views, clusters, sequences, and synonyms. Let’s start looking at these right now to help you understand how all of them will work in your code.

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  • Gordon
  • 23-02-21

Data Manipulation Language

This one is called ‘DML’ when working with SQL, and it is the part that you can use when you are trying to modify the objects that are inside of your database. This will make it easier for your user and yourself to have some more freedom when you are looking through the information in your database and allows you to add in something new that will help the database work better.

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  • Walter
  • 22-02-21

Made to be easy

For those who have not spent that much time at all learning a programming language and who would not consider themselves programmers, the commands that you would use in SQL are not too hard to learn. Commands in SQL are all designed with a syntax that fits in with the English language. They will begin with a command statement that is in charge of describing the action that the program should take. They will then be followed by a clause that will describe the target of the command. This can include a specific table within a database affected by the command. And then it will all end with a series of clauses that are responsible for providing some more information.

At first, this will seem really complicated, and you may be worried about how much work it will be to get it set up. But when you start to work on a few codes, you will find that it is not actually that hard to work with. SQL may sound like it is a complicated language for you to learn, but it is actually really easy to figure out. We will spend some time looking at all the different things that you can do when you decide to use the SQL language to help you control the database that you use in your company.

It is made to be easy and to make things easier when you are working with the database, or when you are trying to make it easy on your user to find information and SQL certainly delivers on this.

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  • Michael
  • 22-02-21

To develop some good standards

The database that comes with SQL is one that has been working well for a long time. In addition, it has been able to develop some good standards that ensure the database is strong and works the way that you want. Some of the other databases that you may want to work with will miss out on these standards, and this can be frustrating when you use them.